| FASTENER LENGTH | 0.875 INCHES NOMINAL |
| HEAD DIAMETER | 0.419 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| HEAD HEIGHT | 0.209 INCHES MINIMUM AND 0.219 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A574, ALLOY STEEL AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SHOULDER DIAMETER | 0.3085 INCHES MINIMUM AND 0.3185 INCHES MAXIMUM OVERALL |
| SHOULDER LENGTH | 0.437 INCHES NOMINAL OVERALL |
| SHOULDER SHAPE | ROUND OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREWS, SHOULDER, HEX SOCKET HEAD |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| WIDTH ACROSS FLATS | 0.15625 INCHES NOMINAL |
| SPECIFICATION/STANDARD DATA | 05047-ASME B18.24-2020 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633, TYPE I, SC 3 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD CLASS | 2A |
| THREAD LENGTH | 0.438 INCHES NOMINAL |